256913160

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{305849}}^1$

素因数の和:305870

約数の個数: 64

約数和(自身を含む): 880848000

約数和(自身を除く): 623934840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 305849, 611698, 917547, 1223396, 1529245, 1835094, 2140943, 2446792, 3058490, 3670188, 4281886, 4587735, 6116980, 6422829, 7340376, 8563772, 9175470, 10704715, 12233960, 12845658, 17127544, 18350940, 21409430, 25691316, 32114145, 36701880, 42818860, 51382632, 64228290, 85637720, 128456580, 256913160]

約数ペア:

[(1, 256913160), (2, 128456580), (3, 85637720), (4, 64228290), (5, 51382632), (6, 42818860), (7, 36701880), (8, 32114145), (10, 25691316), (12, 21409430), (14, 18350940), (15, 17127544), (20, 12845658), (21, 12233960), (24, 10704715), (28, 9175470), (30, 8563772), (35, 7340376), (40, 6422829), (42, 6116980), (56, 4587735), (60, 4281886), (70, 3670188), (84, 3058490), (105, 2446792), (120, 2140943), (140, 1835094), (168, 1529245), (210, 1223396), (280, 917547), (420, 611698), (840, 305849)]